Pulp mold



J. C. JANKUS.

PULP MOLD.

APPLICAHON FILED JUNE 26, 1920.

5 SHEETSSHEET I.

3. C. JANKUS! PULP MOLD.

APPLICATION FILED JUNE 26, 1920.

J. C. JANKUS.

PULP MOLD.

APPLICATION FILED JUNE 26, 1920.

1A28A3'7. Patent dSept. 5, 1922.

5 SHEETS-SHEET 3.

/ g ,4 l z z w J: C. JANKUS.

PULP MOLD.

APPLICATION, FILED JUNE 20, 1920.

J C. JANKUS.

PULP MOLD.

APPLICATION FILED JUNE 26, 1920.

1,428 %3? Patented Sept. 5; 1922.:

5 SHEETS-SHEET 5.

Patented Sept. 5, 1922.

STATES PATENT OFFICE.

JACK c. JANKUS, or SCRANTON, PENNSYLVANIA, ASSIGNOR To WOMANS INSTITUTEor DOMESTIC ARTS & soreness, 1110., OF SGRANTON, rENNsYLvANIA, ACORPORA- TION OF DELAWARE.

PULP MOLD.

Application filed June 26,

To all whom it may concern:

Be it known that I, JACK C. JANKUS, a citizen of the United States,residing at Scranton, in the county of Lackawanna and State ofPennsylvania, have invented new and useful Improvements in Pulp Molds,of which the following is a specification.

This invention relates to molds or presses for plastic materials andmore particularly to presses for making dress forms from paper pulp andsimilar substances. My improved mold is especially adapted for formingthe sections of dress forms such as are illustrated in my concurrentlyfiled application, Serial No. 392,124, dated June 26, 1920.

Heretofore in the formation of the articles referred to great difficultyhas been experienced in effecting quantityproduction of the forms,certain methods now in use involving the tedious and laborious buildingup by hand of the articles in question.

The objects of the present invention are to provide an apparatus formolding and pressing dress forms in sections in such manner that theforms may be readily and easily assembled, to provide a quick pressingand drying mold for these articles which shall be relatively simple ofconstruction, economical in operation and consist of few parts and whichshall reduce the cost of manufacture of dress forms to a considerableextent.

I have illustrated one embodiment of my invention in the accompanyingdrawings, wherein:

Figure 1 is a sectional elevation of a press constructed according to-myinvention.

Figure 2 is a side elevation partly in section of a portion of a pressconstructed according to the invention. 7

Figure 3 is a longitudinal vertical section through the base portion ofa press adapted to mold the upper back portion.

Figure 3 is a perspective of one of the mold members used in the pressillustrated in Figure 3.

Figure '4 is a sectional elevation showing the lower back spider.

Figure 4: is a perspective of the mold member used in Figure 4:.

Figure 5 is a transverse sectional view of the lower front spider.

mold members.

1920. Serial No. 391,873.

Figure 5* is a perspective of the mold member used in Figure 5.

Figure 6 is a top plan view of the upper front spider.

Figure 7 is a side elevation of the spider illustrated in Figure 6.

Figure 7 is a perspective of the upper front mold member.

Figure 8 is a perspective vertical section through a portion of myimproved press.

Figure 9 is a fragmentary section of a modified form of upper front moldmember.

Figure 9 is a perspective view of a modified form of upper front moldmember.

Referring to the drawings, wherein similar numerals denote like partsthroughout the several views, my improved apparatus comprises a base 1which is preferably formed with a hollow interior and is adapted to beheated by steam. The upper face of this base section is formed with asuitably shaped recess, as at 2, generally designed to simulate aportion of the human form, whereby. it is adapted to seat the moldmembers of the apparatus.

In order to facilitate the feeding of material to the'press the neckportion 3 of the base member is formed with an inlet opening 4controlled by a suitable plunger valve 5 and in communication with aconduit 6 leading from a supply tank (not shown) adapted to contain theplastic material to be pressed.

The mold members of the apparatus include female molds 7 which assumethe different forms required to shape the several sections of the dressform. These female mold members are preferably constructed of metal andhave a plurality of perforations therethrough, whereby heat from thebase is freely transmitted to the material under pressure and excesswater in such material permitted to drain off. I also provide aplurality of male mold members 8 which are likewise formed of sheetmetal and of contours to fit within the respective female These malemold members are perforated, as indicated at 8. In the modified form offemale mold member illustrated in Figure 9 for forming the upper frontportion of the dress form, I have shown the mold as formed with acentrally positioned longitudinal embossment 7. This is'provided inorder to produce a centerline body groove in the molded material. Themale mold members 8 are provided with side flanges 9 whereby the articlemolded may be formed with projecting side flanges. For use in connectionwith the male mold members. I provide a backing or spacing plate 10.This plate is formed, preferably, of sheet metal and has a plurality ofapertures 11 therethrough, the edges of the aper tures being burredoutwardly. as indicated at 12, whereby spacing members are providedwhich maintain the backing plate spaced apart from the male mold member.Such construction is preferred in order that there may be a free channelfor the drainage of the excess water exuding from the pressure applyingmold member during thepressing operation. A plurality of frames orspiders 13 are mounted within the spacing plate, these spiders eachbeing formed with a plurality of transverse ribs 14L and a pair ofupwardly extending arms 15. The spiders are further each provided with aseating as at 16 for a vertically disposed pressure shaft 17.

It will be understood that in order to secure the best results, thespiders assume various shapes, depending upon the mold members withwhich they are used. For example, in Figure 3 of the drawings, I haveillustrated the form of spider best adapted to cooperate with the upperback-forming mold plate. Fig. 4 the lower back-forming. Fig. 5 the lowerfront-forming, Figs. 6 and 7 the upper front-forming types, for formingthe various parts of the upper' and lower sections of the dress formdescribed in my co-pending application above referred to.

In order to provide for the ready draining of water or excess liquidfrom the press the base is formed with a plurality of drainage aperturesas '18 communicating with the lower front portion of its recessed topand extending to the front of the base.

The operating mechanism for my press comprises a cylinder 19 housing apiston 20 connected at one end to the vertical shaft 17. The piston isactuated downwardly through means of compressed air or steam admittedthrough a conduit or pipe 21 and in an upward direction through means ofa conduit or pipe 22. The admission of the actuating fluid is controlledfrom the'common supply pipe through means of a usual three-way valve.such as is indicated by 23.

The pressure cylinder may be supported by any suitable means. In Figure1 of the drawings I have illustrated a form which I consider preferableat this time and which includes the end plate 24 formed with a centralaperture for the passage of the piston, which apertures formed with apacking gland 25. The end plate is also formed with an inlet connection26 for pipe 22. The end plate 24 is bolted to and supported by the sidestandards 27 which are formed with vertically grooved slideways 28 forthe arms 15 of the spider.' These side standards are secured by anysuitable means. such as by bolts 29 to the base of the press; In orderto maintain pressure on the material without waste of steam pressure, Ipivot catch levers 30 to two of the side standards. These levers areadapted to cooperate with the upper end of the side arms of the spiderto maintain the spider and associated mold members in pressing positionso long as may be desired. Stop pins 31 are secured to the base 1 andproject slightly above the upper slanting surface 32 of the latter intothe path of the shoulders 33 formed on the arms 15, in order to limitthe downward motion of the male die so as to establish the requiredthickness of the molded product.

In the operation of my device one of the lower or female mold members isplaced in position on the base, the upper mold or male member and itsassociated parts are moved through means of the pressure organization toa position adjacent the lower mold .mem-' ber, whereupon, the plasticmaterial is admitted to the lower mold. hen a sufiicient quantity ofmaterial has been placed in the mold, the plunger is further actuated,whereupon, the article will be pressed to the desired form. the steamheated base operating to thoroughly dry the article within a shortperiod of time and the excess moisture pressed from the article duringthe operation being drained off through outlet 18 in the base member.

I claim 1. In a press for shaping plastic material, the combination ofpressure applying mechanism, movable and stationary mold membersassociated with said mechanism, means for feeding plastic material tothe mold members, means for applying pressure to the movable moldmember. and devices for looking said movable mold member in position.for exerting the desired, maximum compression on the plastic material.

2. In a press for plastic material, a portion formed with a recessed topsimulating a portion of the human form, a substantially horizontalaperture in one end of said base constituting an inlet for plasticmaterial, a valve controlling the passage of material through saidaperture, a mold member adapted to be positioned in said recessed baseto receive the plastic material, a movable mold member adapted tocooperate With said first-named mold member to form the plasticmaterial, and means for applying pressure to said movable mold member.

3. In a press for shaping plastic material, a base portion formed with arecessed top simulating a portion of the human form, an inlet openingfor plastic material in said base, a mold member shaped to fit withinsaid recessed base and adapted to receive the lastic material to bepressed, a second mold member shaped to simulate a portion of the humanform and adapted to fit within said first-named mold member to shape thematerial contained therein, elastic fluid means for applying pressure tosaid secondnamed mold member, and means independent of said elasticfluid system for locking said second-named mold member in pressingposition whereby pressure of the elastic fluid may be relieved.

4. In a pulp press, a lower mold member of perforated sheet metal shapedto simulate a portion of the human form and adapted to receive materialto be pressed, means for supporting said lower mold member, means forsupplyin material to be pressed to said lower mo d member, an upper moldmember of contour to fit within said lower mold member and having aplurality of perforations therethrough, a spacing plate mounted in saidupper mold member, means for maintaining said spacing plate and uppermold member in spaced relation, a spider superimposed on said spacingplate, and means connected to said spider for actuating said upper moldmember to apply pressure to the material in said lower mold member. 5.In a pulp press, a steam heated base portion, an inlet opening andcontrolling valve positioned in the neck of said base portion, a lowermold member mounted in said base portion, an upper mold member adaptedto cooperate with said lower mold member, said upper mold member beingformed with a series of perforations there through, a spacing platehavin a plurality of burred openings therethroui ositioned in said uppermold member, a spider afiixed to said spacing plate, and means actingupon said spider to press said upper mold member Within said lower moldmember.

6. In a press for shaping plastic material, a mold member shaped tosimulate a portion of the human form, said mold member being formed onits inner sidewith a centrally positioned longitudinal embossmentadapted Y to form a groove in the finished product, a

second mold member shaped to fit within,

said first-named mold member, means for supporting said mold members,and means my hand in presence of two subscribing wit- I nesses.

JACK C. J ANIKUS. Witnesses:

KATHARINE MURPHY, IRENE MoAUvIo.

